【发布时间】:2017-04-19 07:30:30
【问题描述】:
为应用编写一些单元测试并在描述块中碰壁。
/* eslint-env mocha */
const React = require('react')
const chai = require('chai')
const { expect } = chai
const Search = require('../js/Search')
const ShowCard = require('../js/ShowCard')
const enzyme = require('enzyme')
const { shallow } = enzyme
const data = require('../public/data')
describe('<Search />', () => {
it('should render as many shows as there are data for', () => {
const wrapper = shallow(<Search />)
expect(wrapper.find(ShowCard).length).to.equal(data.shows.length)
console.log(wrapper.debug())
})
})
Search 组件中的代码是这样渲染 ShowCard 的:
<div className='shows'>
{data.shows
.filter((show) => `${show.title} ${show.description}`.toUpperCase().indexOf(this.state.searchTerm.toUpperCase()) >= 0)
.map((show, index) => (
<ShowCard {...show} key={index} id={index} />
))}
</div>
(wrapper.find(ShowCard).length) 应该等于 (data.shows.length),但它给出了这个错误:
<Search /> should render as many shows as there are data for:
AssertionError: expected 0 to equal 21
+ expected - actual
-0
+21
at Context.<anonymous> (App.spec.js:19:45)
根据上面的错误,问题开始于期望equal(data.shows.length),但我认为这并没有什么问题。谁能指出我正确的方向?
【问题讨论】:
标签: node.js reactjs mocha.js chai enzyme